MESON Chess Problem Database

Problem Display
PID: 170910 (8/3R4/5p2/5N2/5p2/8/1Q1pk1p1/4BbK1 w - - 0 1)

Fossum, Andre Ferdinand

Problemisten, 1954

8/3R4/5p2/5N2/5p2/8/1Q1pk1p1/4BbK1

#2

5 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kd1
      • 2.Qxd2#
    • 1...Kxe1
      • 2.Qxd2#
    • 1...f3
      • 2.Qxd2#
  • Tries
    • 1.Sh4?
      • threat
        • 2.Qxd2#
      • 1...Kd1
        • 2.Qxd2#
      • 1...Kxe1
        • 2.Qxd2#
      • 1...Ke3!
    • 1.Bf2?
      • 1...Kd1
        • 2.Rxd2#
        • 2.Qxd2#
      • 1...f3
        • 2.Rxd2#
        • 2.Qxd2#
      • 1...Kf3!
    • 1.Bh4?
      • 1...Kd1
        • 2.Rxd2#
        • 2.Qxd2#
      • 1...f3
        • 2.Rxd2#
        • 2.Qxd2#
      • 1...Kf3!
    • 1.Rxd2+?
      • 1...Kxe1
        • 2.Qc1#
      • 1...Kf3!
    • 1.Rd3?
      • threat
        • 2.Qxd2#
      • 1...Kd1
        • 2.Qxd2#
      • 1...Kxe1
        • 2.Qxd2#
      • 1...Kxd3!
    • 1.Rd4?
      • 1...Kd1
        • 2.Qxd2#
      • 1...Kxe1
        • 2.Qxd2#
      • 1...f3
        • 2.Qxd2#
      • 1...Kf3!
    • 1.Rd5?
      • 1...Kd1
        • 2.Qxd2#
      • 1...Kxe1
        • 2.Qxd2#
      • 1...f3
        • 2.Qxd2#
      • 1...Kf3!
    • 1.Rd6?
      • 1...Kd1
        • 2.Qxd2#
      • 1...Kxe1
        • 2.Qxd2#
      • 1...f3
        • 2.Qxd2#
      • 1...Kf3!
    • 1.Re7+?
      • 1...Kd1
        • 2.Qb1#
        • 2.Qxd2#
      • 1...Kd3
        • 2.Qb3#
      • 1...Kf3!
    • 1.Rd8?
      • 1...Kd1
        • 2.Qxd2#
      • 1...Kxe1
        • 2.Qxd2#
      • 1...f3
        • 2.Qxd2#
      • 1...Kf3!
    • 1.Qd4?
      • 1...Kd1
        • 2.Qxd2#
      • 1...Kxe1
        • 2.Qxd2#
      • 1...dxe1Q
        • 2.Qd3#
        • 2.Qe4#
      • 1...dxe1S
        • 2.Qf2#
        • 2.Qd1#
        • 2.Qe4#
      • 1...dxe1B
        • 2.Qd1#
        • 2.Qd3#
        • 2.Qe4#
      • 1...dxe1R
        • 2.Qf2#
        • 2.Qd3#
        • 2.Qe4#
      • 1...d1Q
        • 2.Qf2#
        • 2.Qxd1#
        • 2.Qe4#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qf2#
        • 2.Qxd1#
        • 2.Qe4#
      • 1...d1R
        • 2.Qf2#
        • 2.Qxd1#
        • 2.Qe4#
      • 1...f3
        • 2.Qxd2#
      • 1...Kf3!
    • 1.Qb1?
      • 1...dxe1Q
        • 2.Qd3#
        • 2.Qe4#
      • 1...dxe1S
        • 2.Qe4#
        • 2.Qd1#
      • 1...dxe1B
        • 2.Qd3#
        • 2.Qe4#
        • 2.Qd1#
      • 1...dxe1R
        • 2.Qd3#
        • 2.Qe4#
      • 1...d1Q
        • 2.Qe4#
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qe4#
        • 2.Qxd1#
      • 1...d1R
        • 2.Qe4#
        • 2.Qxd1#
      • 1...f3
        • 2.Rxd2#
        • 2.Re7#
      • 1...Kf3!
    • 1.Qa2?
      • 1...Kd1
        • 2.Qxd2#
      • 1...Kxe1
        • 2.Qxd2#
      • 1...f3
        • 2.Qxd2#
      • 1...Kf3!
    • 1.Qc2?
      • 1...Kxe1
        • 2.Qxd2#
      • 1...f3
        • 2.Re7#
        • 2.Qxd2#
      • 1...Kf3!
    • 1.Qb3?
      • threat
        • 2.Re7#
      • 1...dxe1Q
        • 2.Qd3#
      • 1...dxe1S
        • 2.Qd1#
      • 1...dxe1B
        • 2.Qd1#
        • 2.Qd3#
      • 1...dxe1R
        • 2.Qd3#
      • 1...d1S
        • 2.Qxd1#
      • 1...Kxe1!
  • Keys
    • 1.Qc3!
      • 1...Kd1
        • 2.Qxd2#
      • 1...Kxe1
        • 2.Qxd2#
      • 1...dxe1Q
        • 2.Qd3#
      • 1...dxe1S
        • 2.Rd2#
      • 1...dxe1B
        • 2.Qd3#
      • 1...dxe1R
        • 2.Rd2#
        • 2.Qd3#
      • 1...d1Q
        • 2.Re7#
      • 1...d1S
        • 2.Sd4#
      • 1...d1B
        • 2.Sd4#
        • 2.Re7#
      • 1...d1R
        • 2.Re7#
      • 1...f3
        • 2.Qxd2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAR1(C),XP(b)
    • K(c);N_SPINP(b),P-FLIGHT,XB(A)::QAB1(C),XP(b)
    • P(e);SBLOCK::QAR1(C),XP(b)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(c);S_FLIGHT::QAR1(C),XP(b)
        • K(c);N_SPINP(b),P-FLIGHT,XB(A)::QAB1(C),XP(b)
      • Refutation
        • K(c);N_SPINP(b),P-FLIGHT
    • Try
      • B(A);
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • B(A);
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • R(E);CHECK,XP(b)
      • Vars
        • K(c);P-FLIGHT,XB(A)::QAR2(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(E);
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(c);S_FLIGHT::QAR1(C),XP(b)
        • K(c);N_SPINP(b),P-FLIGHT,XB(A)::QAB1(C),XP(b)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT,XR(E)
    • Try
      • R(E);
      • Vars
        • K(c);S_FLIGHT::QAR1(C),XP(b)
        • K(c);N_SPINP(b),P-FLIGHT,XB(A)::QAB1(C),XP(b)
        • P(e);SBLOCK::QAR1(C),XP(b)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(c);S_FLIGHT::QAR1(C),XP(b)
        • K(c);N_SPINP(b),P-FLIGHT,XB(A)::QAB1(C),XP(b)
        • P(e);SBLOCK::QAR1(C),XP(b)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(c);S_FLIGHT::QAR1(C),XP(b)
        • K(c);N_SPINP(b),P-FLIGHT,XB(A)::QAB1(C),XP(b)
        • P(e);SBLOCK::QAR1(C),XP(b)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::QAR2(C)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(c);S_FLIGHT::QAR1(C),XP(b)
        • K(c);N_SPINP(b),P-FLIGHT,XB(A)::QAB1(C),XP(b)
        • P(e);SBLOCK::QAR1(C),XP(b)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(C);N_PINP(b)
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::QAR1(C),XP(b)
        • K(c);P-FLIGHT,XB(A)::QAB1(C),XP(b)
        • P(b);OGATE::QAB1(C),XS(b)
        • P(e);SBLOCK::QAR1(C),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);N_PINP(b)
      • Vars
        • P(b);::QAB1(C),XS(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(c);S_FLIGHT::QAR1(C),XP(b)
        • K(c);N_SPINP(b),P-FLIGHT,XB(A)::QAB1(C),XP(b)
        • P(e);SBLOCK::QAR1(C),XP(b)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(c);N_SPINP(b),P-FLIGHT,XB(A)::QAB1(C),XP(b)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(C);N_PINP(b)
      • Threat
        • R(E)
      • Vars
        • P(b);SBLOCK,XB(A)::QAB1(C)
        • P(b);XB(A)::QAB1(C)
        • P(b);::QAB1(C),XS(b)
      • Refutation
        • K(c);P-FLIGHT,XB(A)
  • Actual
    • Q(C);N_PINP(b)
    • Vars
      • K(c);P_SPINP(b),S_FLIGHT::QAR1(C),XP(b)
      • K(c);P-FLIGHT,P_SPINP(b),XB(A)::QAB1(C),XP(b)
      • P(b);SBLOCK,XB(A)::QAB1(C)
      • P(b);SBLOCK,XB(A)::R1(E)
      • P(b);SBLOCK::R(E)
      • P(b);SBLOCK::S(D)
      • P(e);SBLOCK::QAR1(C),XP(b)
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